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Finding the Fourth Proportional to 459,069, 688,643.19 and 126,645

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Solution

The fourth proportional to 459,069, 688,643.19 and 126,645 is: 189,978.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,069 : 688,643.19 = 126,645 : x
  2. Step 2: Convert to fraction form
    459,069/688,643.19 = 126,645/x
  3. Step 3: Cross multiply
    459,069x = 688,643.19 × 126,645
  4. Step 4: Simplify right side
    459,069x = 87,213,216,797.55
  5. Step 5: Solve for x
    x = 87,213,216,797.55/459,069
  6. Step 6: Final answer
    x = 189,978.45

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